Build /
Build with buildpacks
You can build your projects on Northflank using buildpacks . This does not require you to supply a Dockerfile as a buildpack will try to automatically determine how to build your project. You must specify the build context (root by default).
Select buildpack as the build type when creating your service, or change an existing service from the build options page.
You can select from a list of popular buildpacks under advanced build settings if you require support for other languages. Check the provider's documentation for more information on base images and language versions.
Buildpack stacks on Northflank
| Buildpack stack | Base image | Supported languages |
|---|---|---|
| heroku/builder:22 1 | Ubuntu 22.04 | Go, Java, Node.js, PHP, Python, Ruby, Scala |
| heroku/builder-classic:22 1 | Ubuntu 22.04 | Go, Java, Node.js, PHP, Python, Ruby, Scala, Clojure |
| heroku/buildpacks:20 | Ubuntu 20.04 | Go, Java, Node.js, PHP, Python, Ruby, Scala |
| heroku/buildpacks:18 | Ubuntu 18.04 | Go, Java, Node.js, PHP, Python, Ruby, Scala |
| gcr.io/buildpacks/builder:v1 | Ubuntu 18.04 | Node.js, Python, Go, Java, Ruby |
| cnbs/sample-builder:alpine 2 | Alpine 3.10 | Java, Kotlin |
| cnbs/sample-builder:bionic 2 | Ubuntu 18.04 | Java, Kotlin, Ruby |
| paketobuildpacks/builder:tiny | Ubuntu 18.04 | Java, Go |
| paketobuildpacks/builder:base | Ubuntu 18.04 | Java, Node.js, Go, .NET Core, Ruby, NGINX |
| paketobuildpacks/builder:full | Ubuntu 18.04 | PHP, Java, Node.js, Go, .NET Core, Ruby, NGINX, HTTPD |
- Heroku builder stacks are compatible with the Cloud Native Buildpacks specification
- Cloud Native Buildpack stack samples are not recommended for use in production.
Custom buildpack group
You can use multiple buildpacks together to provide support for more complex builds. For example, you might use one buildpack to install Java, and another buildpack to use Maven to build your application. The builder will run through all the buildpacks to identify the correct ones to use in the build.
You can specify buildpacks in one of the following formats:
| Source | Format | Example | Notes |
|---|---|---|---|
| URL | https://<host>/<path> | https://buildpack-registry.heroku.com/cnb/heroku/nodejs | Needs to resolve to a tar.gz file |
| Github URL | https://<host>/<path> | https://github.com/heroku/heroku-buildpack-nodejs.git | May further specify a tag, branch or commit ID using the format https://<host>/<repo>#<tag/branch/commit-id> |
| Image | [docker://][<host>]/<path>[:<tag>] | docker://docker.io/heroku/procfile-cnb:latest | Can use @digest instead of :<tag> |
| CNB registry resource | urn:cnb:registry[:<id>[@<version>]] | urn:cnb:registry:heroku/nodejs |
If a string does not include a scheme prefix (ex. docker://) the buildpack type can be inferred from the format:
- If it looks like a Docker ref, it will be treated as a
docker://URI - If it looks like a buildpack Registry ID, it will be treated as a
urn:cnb:registryURI
Layer caching
You can make buildpack builds more efficient and faster on subsequent builds by enabling caching. If enabled, the build engine will cache and reuse build dependencies from previous builds.
Learn more in the buildpack documentation .
Next steps
Build from a Git repository
Start building from your linked Git repositories in minutes.
Inject build arguments
Pass secrets and configuration settings to your builds.
Run an image continuously
Deploy a built image as a continuously-running service.
Run an image once or on a schedule
Run an image manually or on a cron schedule.